#pragma once
#include "files.hpp"
#include <memory>
#include <functional>

namespace rpc
{
    class BaseMessage
    {
    public:
        using ptr = std::shared_ptr<BaseMessage>;
        virtual void setId(const std::string& id)
        {
            _rid = id;
        }
        virtual std::string rid()
        {
            return _rid;
        }
        virtual void setMtype(MType mtype)
        {
            _mtype = mtype;
        }
        virtual MType mtype()
        {
            return _mtype;
        }

        virtual std::string serialize() = 0;
        virtual bool deserialize(const std::string& msg) = 0;
        virtual bool check() = 0;

        virtual ~BaseMessage()
        {}
    private:
        MType _mtype;
        std::string _rid;
    };

    class BaseBuffer
    {
    public:
        using ptr = std::shared_ptr<BaseBuffer>; 
        virtual size_t readableSize() = 0;
        virtual int32_t peekInt32() = 0;
        virtual void retrieveInt32() = 0;
        virtual int32_t readInt32() = 0;
        virtual std::string retrieveAsString(size_t len) = 0;
    };
    class BaseProtocol
    {
    public:
        using ptr = std::shared_ptr<BaseProtocol>;
        virtual bool canProcessed(const BaseBuffer::ptr& buf) = 0;
        virtual bool onMessage(const BaseBuffer::ptr& buf, BaseMessage::ptr& msg) = 0;
        virtual std::string serialize(const BaseMessage::ptr& msg) = 0;
    };
    class BaseConnection
    {
    public:
        using ptr = std::shared_ptr<BaseConnection>;
        virtual void send(const BaseMessage::ptr& msg) = 0;
        virtual void shutdown() = 0;
        virtual bool connected() = 0;
    };

    using ConnectionCallback = std::function<void(const BaseConnection::ptr&)>;
    using CloseCallback = std::function<void(const BaseConnection::ptr&)>;
    using MessageCallback = std::function<void(const BaseConnection::ptr&, BaseMessage::ptr&)>;
    class BaseServer
    {
    public:
        using ptr = std::shared_ptr<BaseServer>;
        virtual void setConnectionCallback(const ConnectionCallback& cb)
        {
            _cb_connection = cb;
        }
        virtual void setCloseCallback(const CloseCallback& cb)
        {
            _cb_close = cb;
        }
        virtual void setMessageCallback(const MessageCallback& cb)
        {
            _cb_message = cb;
        }
        virtual void start() = 0;
    protected:
        ConnectionCallback _cb_connection;
        CloseCallback _cb_close;
        MessageCallback _cb_message;
    };

    class BaseClient
    {
    public:
        using ptr = std::shared_ptr<BaseClient>;
        virtual void setConnectionCallback(const ConnectionCallback& cb)
        {
            _cb_connection = cb;
        }
        virtual void setCloseCallback(const CloseCallback& cb)
        {
            _cb_close = cb;
        }
        virtual void setMessageCallback(const MessageCallback& cb)
        {
            _cb_message = cb;
        }
        virtual void connect() = 0;
        virtual void shutdown() = 0;
        virtual bool send(const BaseMessage::ptr& msg) = 0;
        virtual BaseConnection::ptr connection() = 0;
        virtual bool connected() = 0;
    protected:
        ConnectionCallback _cb_connection;
        CloseCallback _cb_close;
        MessageCallback _cb_message;
    };
}
